Lockable

What's Changed
* Add logging to provider constructors by juhhov in https://github.com/jupe/py-lockable/pull/18
* cleanup pylint issues by jupe in https://github.com/jupe/py-lockable/pull/19
* introduce Allocation:allocation_queue_time and allocation_durations by jupe in https://github.com/jupe/py-lockable/pull/20


**Full Changelog**: https://github.com/jupe/py-lockable/compare/v0.5.0...v0.6.0

HTTP provider enables resources to be acquired over HTTP.

Introduce Http retry strategy (16)
Add logger module and use it (17)
Introduce HttpProvider (15)

Release improve resource reading by reloading from file every time when lock() is called and file is changed.

CLI Option to validate only resources.json

NOTE: Introduce breaking changes:
* auto_lock() method yields now Allocation object
* unlock() takes Allocation object as argument

151c111 Fix pid folder usage (8)
1556a17 Introduce simple lockable cli tool (7)
5242026 return Allocation context also for auto_lock() (9)
0325c66 add possibility to load resources list data directly (10)

Use github workflow to build and push docker image to dockerhub.

Add docker github workflow (10)